Oknoname 113140 Reservoir Report

Last Updated: December 7, 2025

Oknoname 113140 is a privately owned dam located in Osage, Oklahoma, near the city of FRANKFORT.


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Summary

Built in 1940, this earth dam stands at a height of 40 feet and has a primary purpose classified as "Other." With a storage capacity of 80 acre-feet and a normal storage level of 50 acre-feet, this structure plays a crucial role in managing water resources in the area. The dam is regulated by the Oklahoma Water Resources Board, and is subject to regular inspections and enforcement measures to ensure its safety and functionality.

Situated on the TR-LONG TREE CR river or stream, Oknoname 113140 has a controlled spillway type with a width of 1 foot. Despite being rated as a low hazard potential dam, it is categorized as having a very high risk assessment. The dam has one outlet gate and is equipped with a valve. Although it has not been recently assessed for its condition, the structure remains operational and plays a significant role in water management and flood control in the region. For water resource and climate enthusiasts, Oknoname 113140 presents an intriguing case study of a privately owned dam with unique design and regulatory considerations.

With a notable history dating back to the 1940s, Oknoname 113140 continues to serve as a key infrastructure component in the water management system of Osage, Oklahoma. Its presence on the TR-LONG TREE CR river contributes to the overall water ecosystem in the area, while its low hazard potential and high risk assessment highlight the importance of ongoing monitoring and maintenance. As climate change impacts water resources, understanding the role of dams like Oknoname 113140 becomes increasingly crucial in ensuring sustainable water management practices for the future.

Year Completed

1940

Dam Length

100

Dam Height

40

River Or Stream

TR-LONG TREE CR

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

35

Nid Storage

80

Structural Height

40

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

40
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.